Double-Layer TPU Case for Impact Protection
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Solution Overview
Problem
Existing cases for electronic devices lack effective protection against impact and shock, particularly at vulnerable corners, and do not offer stylish design options without compromising functionality.
Innovation Solution
A case design featuring a double thermoplastic polyurethane layer structure with a transparent or translucent outer layer and a vividly colored inner insert member, which includes holes or depressions to absorb and distribute impact, and is securely held in place by retaining members, covering the electronic device's side and corner areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer case structure is used, then the device is covered and protected, but the protection against impact and shock is insufficient
Solution Approach 1:
The case is divided into two separate layers: an outer transparent case and an inner colored insert member. This segmentation allows each layer to serve specific functions - the outer layer provides structural integrity and aesthetics, while the inner layer provides impact absorption and shock protection, thereby improving reliability without creating a single complex integrated structure
Solution Approach 2:
The case combines two different materials with complementary properties: a transparent thermoplastic material for the outer case and a colored thermoplastic material with shock-absorbing characteristics for the inner insert member. This composite structure leverages the strengths of each material to achieve both protection and aesthetic goals
2Reliability
If the case covers vulnerable corners, then protection is improved, but the design flexibility and stylish options are limited
Solution Approach 1:
By separating the case into outer and inner layers, the patent enables independent design of each layer. The outer transparent case can maintain a clean, minimalist aesthetic while the inner colored insert member can feature various colors, patterns, and corner reinforcements, providing design versatility without compromising corner protection
Solution Approach 2:
The inner insert member is specifically designed with enhanced coverage at the corners and sides where impact is most likely to occur. This local quality enhancement provides targeted protection at vulnerable areas while the rest of the outer case maintains its aesthetic design, resolving the conflict between protection and design flexibility
3Illumination intensity
If a transparent case is used, then aesthetics are maintained, but protection against impact is reduced
Solution Approach 1:
The patent divides the protective function between two layers: the outer transparent case maintains aesthetics and allows the device to be seen, while the inner colored insert member provides the actual impact protection. This segmentation allows each layer to optimize for its primary function without compromise
Solution Approach 2:
The inner colored insert member acts as an intermediary protective layer between the external impact forces and the device. It absorbs and dissipates impact energy before it can reach the device, while the outer transparent case serves as the aesthetic interface, thus mediating between protection requirements and aesthetic demands
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The double-layered thermoplastic polyurethane structure provides enhanced protection against impact and shock, allows for stylish design options, and securely covers the electronic device's vulnerable corners, while maintaining functionality and aesthetics.
Implementation Method 1
The longitudinal insert member is provided with a plurality of holes and the holes are separated by a plurality of partitions. The structure by the holes is effective in protecting the electronic device from impact or shock.
Implementation Method 2
The outer surface of the longitudinal insert member is provided with a plurality of depressions longitudinally arranged and the structure by the depressions is effective in protecting the electronic device from impact or shock.
Implementation Method 3
The first and second thermoplastic polyurethane layers have a shock absorbing structure.
Data Source
AI summary
A case for an electronic device includes a protective cover having a side wall wherein the side wall significantly covers a side portion of the electronic device and the side wall includes an inner surface and an outer surface wherein the inner surface faces the electronic device and a longitudinal recess is formed on the inner surface; and a longitudinal insert member removably received in the longitudinal recess. The longitudinal insert member includes an inner wall and an outer wall and the inner wall faces the electronic device. The longitudinal insert member further includes a top wall and a bottom wall so that the insert member forms a tube formed by the inner and outer walls and the top and bottom walls. The structure is effective in protecting the electronic device from impact or shock.